This currently stops us from running many of our tests in other browsers, given nobody else still supports these deprecated functions. (Some motivation: comment 7 on Bug 126142)
<rdar://problem/83002132>
*** Bug 265969 has been marked as a duplicate of this bug. ***
Committed 272756@main (1e3966d2e89c): <https://commits.webkit.org/272756@main> Reviewed commits have been landed. Closing PR #21418 and removing active labels.